– Lat/Long: 48.71° N 121.99° W
South Twin Sister Weather Forecast
Cascade Range · United StatesIssued: 10 am Thu 22 Oct Local Time
Updates in:
Update imminent hr min s
Issued: 10 am Thu 22 Oct Local Time
Updates in:
Update imminent hr min s
3 South Twin Sister Elevations: 3 Forecast Elevations: Days 1–3 Weather SummaryMostly dry. Very mild (max 12°C on Thu morning, min 5°C on Thu night). Wind will be generally light. | Days 4–6 Weather SummaryMostly dry. Very mild (max 16°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light. | |||||||||||||||||
Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | |||||||||||||
AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
 | |  |  | |  | |  |  |  | | | | | | | | | |
some clouds | some clouds | clear | clear | clear | some clouds | some clouds | light rain | cloudy | cloudy | clear | some clouds | some clouds | some clouds | some clouds | some clouds | cloudy | some clouds | |
Cloud base (m) | 6300 | 2050 | 1650 | 2850 | 2400 | 2800 | 3350 | 4400 | 6100 | 5800 | 3150 | 2950 | 2800 | 2350 | ||||
km/h | ||||||||||||||||||
 |  |  |  |  |  | |||||||||||||
 cm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
mm | — | — | — | — | — | — | — | 0.2 | — | — | — | — | — | — | — | — | — | — |
max °C | 12 | 12 | 7 | 8 | 11 | 6 | 10 | 11 | 9 | 12 | 14 | 11 | 15 | 16 | 13 | 15 | 15 | 10 |
min °C | 10 | 9 | 5 | 5 | 9 | 6 | 6 | 10 | 9 | 9 | 13 | 10 | 10 | 15 | 12 | 12 | 12 | 8 |
chill °C | 10 | 8 | 5 | 5 | 9 | 6 | 6 | 10 | 9 | 9 | 13 | 10 | 10 | 15 | 12 | 12 | 12 | 8 |
Freezing level m | 2550 | 2150 | 1800 | 1750 | 2000 | 2000 | 2250 | 2350 | 2550 | 2550 | 2650 | 2750 | 2800 | 2800 | 2650 | 2450 | 2350 | 2250 |
 | 7:37 | — | — | 7:39 | — | — | 7:41 | — | — | 7:43 | — | — | 7:43 | — | — | 7:46 | — | — |
 | — | 6:05 | — | — | 6:02 | — | — | 6:01 | — | — | 6:00 | — | — | 5:58 | — | — | 5:55 | — |
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South Twin Sister Weather (Days 0-3):
The weather forecast for South Twin Sister is: Mostly dry. Very mild (max 12°C on Thu morning, min 5°C on Thu night). Wind will be generally light.
South Twin Sister Weather (Days 3-6):
Mostly dry. Very mild (max 16°C on Mon afternoon, min 8°C on Tue night). Wind will be generally light.
This table gives the weather forecast for South Twin Sister at the specific elevation of 500 m. Our advanced weather models allow us to provide distinct weather forecasts for several elevations of South Twin Sister. To see the weather forecasts for the other elevations, use the tab navigation above the table.For a wider overview of the weather, consult the Weather Map of Washington.
| Weather Station | Temp. | Weather | Wind | Gusts | Cloud / Visibility |
|---|---|---|---|---|---|
 | |||||
Bellingham Airport | | ||||
* NOTE: not all weather observatories update at the same frequency which is the reason why some locations may show data from stations that are further away than known closer ones.